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//~ Kennecott ~ . Energy Memorandum Co(oaryo Coal Company L.P. `yd ., FOR: File .lanuary 3, 2002 West Pit Fill Inspection Certification On December 31, 200.1, I inspected the area ~n which the West Pit Excess Spoil Fill is being constructed. The purpose of this inspection was to observe the surface rock drain that borders the 3:1 Excess Pill Slope; inspect the areas dumped to final grade below the 7900 dump elevation; inspect the topsoil replacement placed below the 7350 elevation on the north side of the fill; inspect the re-vegetation on the fill surface and to inspect the fill for areas of water seepage or surface drarnage, inspect the final grade slopes below the 7300 elevation of the Excess Fill Slope, and to satisfy the requirements of CDMG Rule 4.09.1(lla). During the inspection rt was observed that the condition of the fill was good, no seeps or springs were noted. The collection ditches at the 6950, 7050 and 7150 elevations all were in relatively good shape, although the ditches themselves were covered with snow. The surface rock clra in was dry and frozen, the underdrain was dry and frozen, less than 1/10th gallons per minute was running from under the west side of the toe drain and the standing water waa frozen, no water was runnrng from the lateral rock drain Chat drains the pond slide area. I am a mining engineer, registered in the Stale of Colorado, and experienced in the construction of rock and earthen projects for the purposes of mining activities. To the best of my knowledge, based on my professional expertise the West Pit Excess Spoil Fill has thus far been construct=_d in conformance with the prudent state-of-the-art methodology for earth and rock fill construction, as specified in pages Ia-2 through Ia-9, Er:hibic 19Ib, and other applicable requirements of the approved permit documents, a portion of CDMG Permit C-81- 019. kemeyer P.E. 25436 ?/od'L